[linux-dvb] Flooding interrupts

Jimmy Hedman jimmy.hedman at southpole.se
Tue Sep 26 09:57:24 CEST 2006


On Mon, 2006-09-25 at 23:40 +0200, Hartmut Hackmann wrote:
> Hi,
> 
> Jimmy Hedman wrote:
> > Hi,
> > I have a Compro DVB-T 300 which uses the saa7134-dvb-driver. When it's
> > tuned it is flooding my system with between 12000 and 16000 interrupts a
> > second. It works, but that amout of interrupts doesn't sound healty. Any
> > ideas what this could be?
> > 
> > Many thanks in advance,
> > Jimmy Hedman
> > 
> The streaming DMA causes loads of interrupts, but not that many.
> For DVB-T you should expect about 70 per sec, and for analog, its
> up to 50 per sec for 50Hz systems.
> The only other valid interrupt source are the GPIOs (Remote control).
> If there really are so many interrupts, there must be something wrong
> with the GPIO config but i don't think so.
I actually have a problem with the remote! It's giving the last pressed
key plus the current key every time which makes it impossible to use.
The first key goes through, but all the following keys gets duplicated
on the next key press. For example, if I press DOWN, DOWN, UP, LEFT, i
get DOWN, DOWN+DOWN, DOWN+UP, UP+LEFT.
Can I debug this in any way?

// Jimmy




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